From the statements given below choose the correct statement(s): I. Blackman’s Law states…

Biology · NEET · NTA ExamsPhotosynthesis in Higher Plants

From the statements given below choose the correct statement(s):

I. Blackman’s Law states that the rate of a process is limited by the factor that is closest to its minimum value.
II. On a graph of photosynthesis rate vs. light intensity, the plateau region indicates that light is the limiting factor.
III. If a plant is provided with optimal light and CO₂ but is at a very low temperature, temperature becomes the limiting factor.
IV. The law applies only to chemical processes and not to biological ones like photosynthesis.
V. When several factors affect a process simultaneously, the one nearest its optimum level determines the rate.

Choose the correct option from the following:

  1. I and II only
  2. I and III only
  3. II and IV only
  4. III and V only

Answer

(B) I and III only

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